ash/system/date/date_view.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef ASH_SYSTEM_DATE_DATE_VIEW_H_
   6 #define ASH_SYSTEM_DATE_DATE_VIEW_H_
   7
   8 #include "ash/system/date/tray_date.h"
   9 #include "ash/system/tray/actionable_view.h"
  10 #include "base/i18n/time_formatting.h"
  11 #include "base/timer/timer.h"
  12 #include "ui/views/view.h"
  13
  14 namespace views {
  15 class Label;
  16 }
  17
  18 namespace ash {
  19 namespace internal {
  20 namespace tray {
  21
  22 // Abstract base class containing common updating and layout code for the
  23 // DateView popup and the TimeView tray icon.
  24 class BaseDateTimeView : public ActionableView {
  25  public:
  26   virtual ~BaseDateTimeView();
  27
  28   // Updates the displayed text for the current time and calls SetTimer().
  29   void UpdateText();
  30
  31  protected:
  32   BaseDateTimeView();
  33
  34  private:
  35   // Starts |timer_| to schedule the next update.
  36   void SetTimer(const base::Time& now);
  37
  38   // Updates labels to display the current time.
  39   virtual void UpdateTextInternal(const base::Time& now) = 0;
  40
  41   // Overridden from views::View.
  42   virtual void ChildPreferredSizeChanged(views::View* child) OVERRIDE;
  43   virtual void OnLocaleChanged() OVERRIDE;
  44
  45   // Invokes UpdateText() when the displayed time should change.
  46   base::OneShotTimer<BaseDateTimeView> timer_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(BaseDateTimeView);
  49 };
  50
  51 // Popup view used to display the date and day of week.
  52 class DateView : public BaseDateTimeView {
  53  public:
  54   DateView();
  55   virtual ~DateView();
  56
  57   // Sets whether the view is actionable. An actionable date view gives visual
  58   // feedback on hover, can be focused by keyboard, and clicking/pressing space
  59   // or enter on the view shows date-related settings.
  60   void SetActionable(bool actionable);
  61
  62  private:
  63   // Overridden from BaseDateTimeView.
  64   virtual void UpdateTextInternal(const base::Time& now) OVERRIDE;
  65
  66   // Overridden from ActionableView.
  67   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
  68
  69   // Overridden from views::View.
  70   virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
  71   virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
  72
  73   views::Label* date_label_;
  74
  75   bool actionable_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(DateView);
  78 };
  79
  80 // Tray view used to display the current time.
  81 class TimeView : public BaseDateTimeView {
  82  public:
  83   TimeView(TrayDate::ClockLayout clock_layout);
  84   virtual ~TimeView();
  85
  86   views::Label* label() const { return label_.get(); }
  87   views::Label* label_hour_left() const { return label_hour_left_.get(); }
  88   views::Label* label_hour_right() const { return label_hour_right_.get(); }
  89   views::Label* label_minute_left() const { return label_minute_left_.get(); }
  90   views::Label* label_minute_right() const { return label_minute_right_.get(); }
  91
  92   // Updates the format of the displayed time.
  93   void UpdateTimeFormat();
  94
  95   // Updates clock layout.
  96   void UpdateClockLayout(TrayDate::ClockLayout clock_layout);
  97
  98  private:
  99   // Overridden from BaseDateTimeView.
 100   virtual void UpdateTextInternal(const base::Time& now) OVERRIDE;
 101
 102   // Overridden from ActionableView.
 103   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
 104
 105   // Overridden from views::View.
 106   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
 107
 108   void SetBorder(TrayDate::ClockLayout clock_layout);
 109   void SetupLabels();
 110   void SetupLabel(views::Label* label);
 111
 112   scoped_ptr<views::Label> label_;
 113   scoped_ptr<views::Label> label_hour_left_;
 114   scoped_ptr<views::Label> label_hour_right_;
 115   scoped_ptr<views::Label> label_minute_left_;
 116   scoped_ptr<views::Label> label_minute_right_;
 117
 118   base::HourClockType hour_type_;
 119
 120   DISALLOW_COPY_AND_ASSIGN(TimeView);
 121 };
 122
 123 }  // namespace tray
 124 }  // namespace internal
 125 }  // namespace ash
 126
 127 #endif  // ASH_SYSTEM_DATE_DATE_VIEW_H_